Question

If root80 = k root5 then k =

Answer 1

$\sqrt{80} = k \sqrt{5}$

$k = \frac{ \sqrt{80} }{ \sqrt{5} }$

$k = \sqrt{ \frac{80}{5} }$

$k = \sqrt{16}$

$k = 4$

PLZ MARK BRAINLIEST

Answer 2

Answer:

+4 or -4

Step-by-step explanation:

$\sqrt{80} = k \sqrt{5} \\ k = \frac{ \sqrt{80} }{ \sqrt{5} } \\ {k}^{2} = {(\frac{ \sqrt{80} }{ \sqrt{5} })}^{2} \\ {k}^{2} = \frac{80}{5} \\ {k}^{2} = 16 \\ k = \sqrt{16} \\ k = + 4 \: \: or \: - 4$